Laravel-使用来自数据库功能改进的数据填充图表

如何解决Laravel-使用来自数据库功能改进的数据填充图表

我有一个管理仪表板，显示折线图，其中包含每月注册的用户数。 我正在从数据库中获取数据，并且看起来一切正常，但是该功能相当大，我想知道是否有一种更优化，更有效的方式来获取和返回相同数据？

我正在将此函数分配给变量并将其传递给我的视图。

// Get Monthly Registered Users This year
public function monthlyRegisteredUsers()
{
    $janUsers = User::whereMonth('created_at',1)->whereYear('created_at',Carbon::now()->format('Y'))->count();
    $febUsers = User::whereMonth('created_at',2)->whereYear('created_at',Carbon::now()->format('Y'))->count();
    $marUsers = User::whereMonth('created_at',3)->whereYear('created_at',Carbon::now()->format('Y'))->count();
    $aprUsers = User::whereMonth('created_at',4)->whereYear('created_at',Carbon::now()->format('Y'))->count();
    $mayUsers = User::whereMonth('created_at',5)->whereYear('created_at',Carbon::now()->format('Y'))->count();
    $junUsers = User::whereMonth('created_at',6)->whereYear('created_at',Carbon::now()->format('Y'))->count();
    $julUsers = User::whereMonth('created_at',7)->whereYear('created_at',Carbon::now()->format('Y'))->count();
    $augUsers = User::whereMonth('created_at',8)->whereYear('created_at',Carbon::now()->format('Y'))->count();
    $sepUsers = User::whereMonth('created_at',9)->whereYear('created_at',Carbon::now()->format('Y'))->count();
    $octUsers = User::whereMonth('created_at',10)->whereYear('created_at',Carbon::now()->format('Y'))->count();
    $novUsers = User::whereMonth('created_at',11)->whereYear('created_at',Carbon::now()->format('Y'))->count();
    $decUsers = User::whereMonth('created_at',12)->whereYear('created_at',Carbon::now()->format('Y'))->count();
    $data  = [$janUsers,$febUsers,$marUsers,$aprUsers,$mayUsers,$junUsers,$julUsers,$augUsers,$sepUsers,$octUsers,$novUsers,$decUsers ];
    return $data;
}

它所做的只是获取每月的注册用户数并将其分配给变量，然后返回包含每月用户数的数组。 这可以改善吗？

非常感谢

解决方法

您可以使用array_map和range使此代码更短：

public function monthlyRegisteredUsers()
{
  return array_map(function($month){
    return User::whereMonth('created_at',$month)->whereYear('created_at',Carbon::now()->format('Y'))->count();
  },range(1,12))
}

我认为您可以使用group by来运行一个查询，让我通过一个更好的查询来更新答案。

public function monthlyRegisteredUsers()
{
  $counts = User::select(DB::raw('MONTH(created_at) month,count(*) as count'))
            ->whereYear('created_at',Carbon::now()->format('Y'))
            ->groupBy(DB::raw('MONTH(created_at)'))
            ->pluck('count','month')
            ->toArray();
   return array_map(function($month) use ($counts){
            return Arr::get($counts,$month,0);
        },12));
}